The bellows inside the trap is filled with a mixture that is set to boil at a temperature slightly lower than the steam.

疏水阀内的膜盒充满了混合物，其沸点比蒸汽稍低一些。

youdao

The bellows inside the trap is filled with a mixture that is set to boil at a temperature slightly lower than the steam.

疏水阀内的膜盒充满了混合物，其沸点比蒸汽稍低一些。

youdao